Thanks everyone. I should have said that it's in bark (mixed with some small stones as well).
OK, so there is a skewer in it for holding the flower spike and I have been using that to judge how wet the bark was low down.
I guess my worry is that with Phals I would do the same thing but wait till it comes out dry. If I'm not menat to let this Paph dry out then what is the difference between the skewer when it's wet enough and the skewer when it's still damp but ready for watering.
I'm afraid I'm somewhat confused
I'll try using the weight of the pot, but I've not managed to work out judging that yet.
I've had this Paph a week now and I've watered once when I first got it (because it seemed very dry) once in mid week and then again yesterday. Yesterday I actually nocked out some of the bark from the top of the roots to take a peek at them and the bark seemed semi-dry so I watered again when I put it back.
I don't want to take the bark out every time to judge it though